Year	Number of Firms
1992-01-01	317
1997-01-01	422
2002-01-01	508
2003-01-01	503
2004-01-01	512
2005-01-01	532
2006-01-01	538
2007-01-01	621
2008-01-01	661
2009-01-01	594
2010-01-01	606
2011-01-01	577
2012-01-01	548
2013-01-01	586
2014-01-01	624
2015-01-01	580
2016-01-01	596